Electrode-terminal



-A.' H-. HAEFELE.

- ELECTRODE TERMINAL. APPLICATION nuzo MAR. 21. m5

1 371,12,, Patented May 3., 1921.

, N555. INVENTOR.

WIT .ALEET H. 1%

I QL %Q W A TTORNE Y [Ten STATES FFIE.

ALBERT I-I. HAEFELE, OF LAKEWOOD, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO NATIONAL CARBON COMPANY, INC., A CORPORATION OF NEW YORK.

ELECTRODE-TERMINAL. Y

- Patented May 3, 1921.

Original application filed January 23, 1914.,Serial No. 813,928. v Divided and this application filed March 31, 1915. Serial No. 18,274. I

a citizen of the United States, residing at Lakewood, in the county of Guyahoga and State of Ohio, have invented a certain new and useful Improvement in Electr0de-Terminals, of which the following is a full, clear, and exact description.

This application, which is a division of my application Serial No. 813,928, filed January 23, 1914:, relates to a battery connector and is particularly adapted for dry cell carbon electrodes. I

It has formerly been the practice to solder, rivet or otherwise fasten a sprin clip to the metal cap of a dry cell carbon. he clip and cap are therefore necessarily formed by distinct operations and additional-time and labor are required to secure the two; together. The voltage of a dry'cell is not high and it is important'to secure a good electrical connection between the clip and the cap so that there will be no drop in the joint. If the clip is secured to the cap by rivets or screws 'a high resistance connection frequently results. Even though the connection is in good conditionwhen the cell leaves the factory, the clip is liable to work loose whenput in use, which causes a useless waste of energy as well as a low terminal voltage of the cell. Soldered connections are liable to loosen on account of corrosionv or electrolytic action and in addition are liable to be knocked off by rough handling. It is the object of my invention to overcome these disadvantages. c

In the drawings Figure 1 is a side view of the terminal Fig. 2 is a top View.

Fig. 3 is a perspective view.

Fig. 4; is a perspective View of a modification.

Figs. 5 and 6 are a side and a top view re,- spectively of the modification shown in Fig. 4.

In the drawings the cap, which is adapted to be applied to a carbon electrode of a dry cell, consists of a cylindrical side orskirt portion 1 and a top portion 2.

In my form of electrode terminal the clip is drawn or struck up from the top of the cap itself, so that no rivets or solder is necspring brass of appropriate thickness and the connector can be made at the same time or afterward. 'A central tongue or pressure member 10. is stamped out of and extends across the top portion 2 of the cap and has formed 1n it a wire engaging portion which may be made V-shaped.

Oneach side of this tongue or pressure membenangular or V-shaped members 11 are struck up from the top portion, but are integral therewith at each end. The V- shaped portions of the tongue and side mem' bers extend in opposite directions, so that .when the tongue is depressed a conductor wire can be inserted 1n the endless loops or eyes formed by the members ll and the part of the top between the ends of each of such members. lVhen pressure is released this wire is'rigidly held in position.

To give rigidity to the tongue member, a ridgeor furrow 12 is preferably stamped throughout all, or a greater portion, of its length. This also tends to contract the tongue member. so that sufiicient clearance will be had to permit free movement between the side members.

The modification-shown in Figs. 4,. 5 and Gdiffers from that just described in the formation of the side 1 members 9. These are stamped from the top portion of the cap in such a way that they have free ends which preferably extend in a direction opposite to that of the tongue member 10. In

this modification it is advisable to form the ridge 12 on all'three members.

The cap, after having'been formed and stamped with the connector of either of the modifications, will-be driven over a carbon electrode of a dry cell and no further work 1. A battery terminal consisting of a cap having a top and a dependingskirt portion,

- a resilient tongue member struck up from the top and having a V-shaped wire engaging depression, and a V-shaped wire engaging member struck up from the to of the cap on each side of the tongue mem er, said second-mentioned V-shaped members being integral with the cap at both of their ends and adapted to cooperate with the depression to engage a conductor when the tongue is depressed.

2. A battery terminal consisting of a cap having a top and a depending skirt portion,

a resilient tongue member struck up from the top and having a wire engagingdepres sion and two hook-shaped members struck up from said top, one on each side of said tongue adapted to cooperate with the depression to engage a conductor when the the tongue and integral with the top atthe.

side adjacent to the free end of the tongue,

said tongue and wire engaging members adapted to detachably hold a terminal wire therebetween.

4. A spring contact comprising a onepiece member consisting of a top and a flange projecting at an angle thereto from one side of the top and a spring tongue formed and struck up from the top at the other side of such top, said tongue lying flatwise across such top, and an endless loop independent of the tongue and also operating with the tongue to hold an electrical connection.

5. A spring contact comprising a onepiece member consisting of a top and a circular flange projecting at an angle thereto from one side of the top and a spring tongue formed and struck up from the top at the other side of such top, said tonguelying flatwise across such top, and a pair of endless loops independent of thetongue and one at each side thereof formed and struck up from the top and cooperating with the spring tongueto hold an electrical connection, the spring tongue being bent upwardly and downwardly and then forwardly so as to exertuits pressure in a direct-ion away from the top.

6.- A one-piece battery terminal cap comprising a top, a circular flange depending therefrom, a spring tongue struck up from and extending across the upper side of said top, and a pair of wire-receiving-eyesstruck up from'said upper side of said top, said eyes being disposed on opposite sides of said tongue and adapted to cooperate therewith to hold' a conductor therebetween, such top, flange, tongue and eyes being formed from. a' single piece of metal and integrally connected together.

In testimony whereof, I hereunto affix my signature. formed and struck up from the top and co- ALBERT H. HAEFELE. 

